No, that's not a typo. According to a brief Pocket.IGN article, Doom 2 for the Game Boy Advance made its debut at E3, as a playable version demoed on some GBAs in the Activision booth. I think it might have been a little overshadowed by its big brother but it's nice to know that it's in the works. According to the article, the company responsible for the port is not David A. Palmer Productions, which did GBA Doom, but instead Torus Games.

Kid Airbag
Not really a kid. Not really an airbag. WHAT THE HELL IS IT?!? Who's asking? Are you French? An airbag is a safety device in a car that inflates during a collision and blocks you from smashing your head into the dashboard or steering wheel!

The hard part is done. The DOOM engine has been ported (via the Jaguar source) to the AGB. All that remains an issue is ROM size.
I suspect that the original AGB DOOM used an 8Mb cart and probably filled it up nicely. With all the new GFX, SFX and levels required in DOOM2 I'd say they have some nice compression happening.
Can't wait.